HILS 시스템을 통한 IPMSM의 철손저항 추정

Abstract

This paper presents the d-q axis equivalent circuit model of an interior permanent magnet (IPM) whichincludes the iron loss resistance. The model is implemented to be able to run in real-time on the FPGA-based HILsimulator. Power electronic devices are removed from the motor control unit (MCU) and a separated controller isinterfaced with the real-time simulated motor drive through a set of proper inputs and outputs. The inputs signals of theHIL simulation are the gate driver signals generated from the controller, and the outputs are the winding currents andresolver signals. This paper especially presents iron loss prediction which is introduced by means of comparing thetorque calculated from d-q axis currents and the desired torque; and minimizing the torque difference. This predictionmethod has stable prediction algorithm to reduce torque difference at specific speed and load. Simulation resultsdemonstrate the feasibility and effectiveness of the proposed methods.